If you look down the page on the right, there's a part called "Camera Data", showing what camera he used, what settings and the editing software. He used Photoshop CS5 for Windows, but probably only to touch up the exposure, not to add anything.
Very nice. ( looked at it cuz I look similar) though the amount of editing around the face makes it look digital, sorta. I actually do look kinda like that, with fuller thighs, curlier hair, and green hazel eyes